A lake starts freezing because of the cold atmosphere. It will first freeze...? Mcqs

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A lake starts freezing because of the cold atmosphere. It will first freeze...?

(A) At the bottom
(B) ln the middle pan

(C) At the top surface
(D) Uniformly throughout the water body

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How many countries are signatories of NASA’s Artemis Accords as of May 2024...?

(A) 29
(B) 30

(C) 40
(D) None of These

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The point where the enzyme is most active is known as ______...?

(A) Neutral pH
(B) Acidic pH

(C) Basic pH
(D) Optimum pH

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The _______ is made up of a double helix of two complementary strands....?

(A) RNA
(B) Chromosome

(C) DNA
(D) Protein

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The process of emission of electrons from the hot metal surfaces is called...?

(A) Plastic emission
(B) Thermionic emission

(C) Static emission
(D) Current emission

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When sound waves travel from air to water which of the following quantities remains unchanged...?

(A) Speed
(B) Frequency

(C) Intensity
(D) Wavelength

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A Global Positioning System (GPS) comprises how many satellites...?

(A) More than 10
(B) More than 20

(C) More than 30
(D) More than 40

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Which of following contains cobalt...?

(A) Vitamin K
(B) Chlorophyll

(C) Vitamin B12
(D) Haemoglobin

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The importance of perspiration is to ___________...?

(A) Eliminate body odours
(B) Improve the general health

(C) Open the pores in the skin
(D) Regulate body temperature

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Which of the following gas diffuses fastest...?

(A) Hydrogen
(B) Chlorine

(C) Fluorine
(D) Helium

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